Eversys Coffee Machine Error Code S-103: Depressurizing Steam Boiler

What does Eversys error code S-103 mean?

S-103 is a progress message on the Eversys Cameo. The screen reads "Depressurize steam boiler..." and the e'Support table says it is displayed during the process of depressurizing the steam boiler. The action is to wait until the boiler is depressurized, or to abort by pressing the stop button in the upper left corner. Like S-102, it describes a routine the machine is running on purpose, and no cause is listed because nothing has gone wrong. The table does not say why the pressure is being released, how long it takes or what follows. We can only say that S-101, which asks for the machine to be switched off, belongs to the same group and appears after the boiler has been emptied or depressurized. If the stop button is used, the table does not describe the state the boiler is left in, so avoid treating an aborted run as a finished one. Depressurizing is a safety-related step: the control brings the boiler down before anyone works on it or before the machine is powered off.

Affected models and control systems

Eversys Cameo range (Cameo/Core, Classic, ST and in-box versions). The message is listed in Eversys' e'Support table of operator stop messages for Cameo, and the table gives no board revision or model limit.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• The screen shows "Depressurize steam boiler..."
• Steam drinks are unavailable
• A hiss or release of steam may be heard

Possible causes

Likely causes — what usually sits behind error code S-103 on this control. A technician confirms which one it is before any part is replaced.

• Steam boiler depressurizing routine is running
• The routine was started for a shut-down and the operator did not notice
• The boiler was still under pressure after a long steam session, so the release takes longer
• A stop was pressed in the middle, then the routine restarted, so the message returned

Safe checks before calling for service

How a technician diagnoses error code S-103

1. Confirm S-103 against the Cameo table and ask what led to it.
2. Watch for the end of the routine and the next message.
3. Check for pressure that does not fall, which suggests a blocked release path.
4. Inspect pressure and level parts for correct readings.
5. Test relief and drain parts if the routine does not complete.

How error code S-103 differs from similar codes

S-103 is the pressure-release stage next to S-102, which empties the boiler.

Technical reference

Document

Operator stop messages for Cameo (S-XXX)

Models / control

Eversys Cameo range (Cameo/Core, Classic, ST, in-box), e'Support article

Section

Web page table of S-numbers, Infos messages and Explanations / Remedies (no page numbers)

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.